25 Tech Firms Sign Open-Weight AI Coalition Letter

On July 24, a coalition of 25 technology companies published 'Open Weights and American AI Leadership' to US policymakers, arguing that open-weight AI is essential to national competitiveness. Microsoft and Meta co-led alongside NVIDIA. OpenAI, Anthropic, Google, and Amazon declined to sign.

Key Points:

• Signatories include NVIDIA, Microsoft, Meta, IBM, Dell, Palantir, Mistral, Hugging Face, Perplexity, Mozilla, Y Combinator, and Andreessen Horowitz.

• NVIDIA CEO Jensen Huang wrote that open models 'strengthen safety and cybersecurity, accelerate innovation, and enable sovereignty.'

• Satya Nadella publicly endorsed the letter and advocated for open-weight models on X.

• OpenAI, Anthropic, Google, and Amazon all declined to sign—reflecting their commercial dependence on proprietary API subscriptions.

• The letter directly responds to Washington debates about restricting Chinese open-weight models, triggered by Kimi K3's July 16 release.

This is the first time the open vs. closed AI debate has crystallized into an explicit political document with named signatories. The commercial logic of the divide is transparent: companies that profit from open ecosystems signed; companies that profit from closed APIs did not. The outcome of Washington's policy response will directly determine whether organizations can freely evaluate and deploy Chinese open-weight models.

Why It Matters: The abstention of OpenAI and Anthropic from a letter co-signed by their own distribution partners signals diverging commercial interests. The policy outcome will shape enterprise AI procurement decisions for years.